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Data Sheet No. 2N4957 Generic Part Number Type 2N4957 2N4957 Geometry 0006 Polarity PNP REF MIL-PRF-19500/426 Qual Level JAN - JANS Features Small signal RF silicon transistor designed for high-gain, low-noise applications. Housed in a TO-72 case. Also available in chip form using the 0006 chip geometry. The Min and Max limits shown are per MIL-PRF-19500/426 which Semicoa meets in all cases. TO-72 Maximum Ratings TC = 25oC unless otherwise specified Rating Symbol Rating Unit Collector-Emitter Voltage VCEO 30 V Collector-Base Voltage VCBO 30 V VEBO Emitter-Base Voltage 3.0 V IC Collector Current, Continuous 30 A o Operating Junction Temperature TJ -65 to +200 C o Storage Temperature TSTG -65 to +200 C Data Sheet No. 2N4957 Electrical Characteristics TC = 25oC unless otherwise specified OFF Characteristics Symbol Min Max Unit Co